| 北京森林碳储量海拔梯度上的变化趋势(英文) |
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| 引用本文： | 肖玉,安凯,杨洋,谢高地,鲁春霞.北京森林碳储量海拔梯度上的变化趋势(英文)[J].资源与生态学报（英文版）,2014,5(2):148-156. |
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| 作者姓名： | 肖玉 安凯 杨洋 谢高地 鲁春霞 |
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| 作者单位： | [1]中国科学院地理科学与资源研究所,北京100101 [2]北京精准时空信息技术有限公司,北京100192 [3]北京林业勘察设计院,北京100029 |
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| 基金项目： | the Strategic Priority Research Program of the Chinese Academy of Sciences （No. XDA05050203）, and the Key Project for the Strategic Science Plan of IGSNRR, CAS （No. 2012ZD007）.
The authors would like to thank the Beijing Forestry Survey and Design Institute for providing data from the Seventh Forest Resource Inventory of Beijing in 2009 |
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| 摘 要： | 像北京这样的中国城市化地区的快速人口和GDP增长已经导致了来自化石燃料的大量CO2排放。森林被认为是最重要的碳汇,可以中和碳排放。本研究基于2009年森林清查数据和森林植被碳含量,采用生物量扩展因子(BEFs)方法评价了北京森林植被碳储量,利用森林凋落物与森林生物量的比例以及凋落物碳含量计算了凋落物碳储量,利用土壤厚度、容重和SOM含量计算了土壤碳储量。我们总结得出,阔叶林是北京森林主要碳库,森林碳储量主要分布在海拔60m的平原地区和60-600m的低山地区。北京森林碳密度几乎随着海拔增加而增加,但是在海拔200-400m地区略有下降,其中植被碳密度在60m的平原地区相对较高,这主要是由于碳密度较高的杨树和落叶松人工林的比例较高以及灌溉、施肥等促进植物碳累积的人工管理措施较多;森林土壤碳密度几乎随着海拔增加而增加,这主要是由于土壤碳输出随着海拔增加而逐渐下降,因为林下种植、灌溉和施肥加速了低海拔地区的土壤异氧呼吸但随着海拔增加而下降,同时海拔200-800m的低山地区常见的土壤侵蚀也会随着林下种植等干扰措施的减少而下降。本研究可以为区域森林生态系统管理者提供保护森林生态系统和改善森林碳储量提供科学知识。
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| 关 键 词： | 森林 碳储量 海拔梯度 北京 |
| 收稿时间： | 2013-08-21 |
Forest Carbon Storage Trends along Altitudinal Gradients in Beijing,China |
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| XIAO Yu,AN Kai,YANG Yang,XIE Gaodi,LU Chunxia.Forest Carbon Storage Trends along Altitudinal Gradients in Beijing,China[J].Journal of Resources and Ecology,2014,5(2):148-156. |
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| Authors: | XIAO Yu AN Kai YANG Yang XIE Gaodi LU Chunxia |
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| Institution: | 1.Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;2.PtasInfo Information Technology Co., Ltd., Beijing 100192, China;3.Beijing Forestry Survey and Design Institute, Beijing 100029, China |
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| Abstract: | Rapid growth in population and gross domestic product in Chinese urban regions such as Beijing has resulted in a large amount of CO2 emissions from fossil fuels. Forests are considered the most important carbon sink to offset these carbon emissions. In this study we estimated forest carbon storage in Beijing using forest inventory data and the biomass expansion factors method. We analyzed trends in the forest ecosystem and its fractions along altitudinal gradients. We concluded that broad-leaved forest is the main forest carbon pool in Beijing, and forest carbon is mainly stored in plains at an altitude of＆lt;60 m a.s.l. and in the low mountainous area at an altitude of 60-600 m a.s.l. Forest ecosystem carbon density in Beijing increases with altitudinal gradients but slightly decreases in regions at altitudes that range from 200-400 m a.s.l. Forest vegetation carbon density of the plain area at an altitude of ＆lt;60 m a.s.l. is much higher than other areas, attributable to the high ratios of the plantation of Populus spp. and Larix principisrupprechtii with higher vegetation carbon densities than others and human practices such as fertilization and irrigation which are beneifcial for vegetation carbon accumulation. The forest soil carbon density in Beijing also increases with increasing altitude, attributable to decreasing soil carbon output with altitude. Management practices such as understory cultivation, irrigation, fertilization and scariifcation directly accelerate carbon emissions from soil heterotrophic respiration which decreases with altitude. Soil erosion in areas that range from 200-800 m a.s.l. also decrease with altitude as management practices decrease. This study will underpin scientiifc knowledge for local forest managers to adopt more appropriate practices to protect forest ecosystems and to improve forest carbon storage. |
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| Keywords: | forest carbon storage altitudinal gradient Beijing |
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